Which microsd for my sansa clip+ ?

Hey there I would like to ask you whether the class of microsd is important ? My options are class 2 and 4. Is there any difference between them according that player? Does the class affects the playing speed or the writing speed? Thank you in advance…

The Class or speed of a memory card refers only to the ‘writing’ speed. So you may notice a slight speed improvement of a Class 4 over a Class 2 when transferring a large amount of music files to the card. But there is no difference in ‘reading’ or playback off of the card in the player.

My opinion is save your money and get the Class 2.